CPlusPlusThings/site_extras/cpp-projects-cpp-fnonce-implementation.md at master - CPlusPlusThings - Gitea: Git with a cup of tea

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light-city dfe1c933b3 docs: address community issue feedback (#5 #338 #142 #246 #136 #303 )

- const README: rewrite the space-saving claim per issue #5 follow-ups
  (constant-expression const vs #define immediates; which const qualify
  as constant expressions)
- const README: fix the class-section diagnosis per issue #338 (overload
  resolution picks the const overload; the restriction only surfaces
  once that overload is removed)
- sizeof README: virtual-inheritance result is compiler-dependent
  (GCC merges vbptr+vfptr -> 16, MSVC keeps them separate -> 32) #246
- static README: new section on internal linkage / access restriction
  with anonymous-namespace comparison #142
- 10-day practice: full problem list table + fixed day links #136
- new design_pattern/singleton/singleton_default.hpp: reusable
  thread-safe CRTP singleton template, compile+concurrency tested #303

2026-10-13 19:23:54 +08:00

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 > 来自 [C++那些事网站](https://light-city.github.io/stories_things/cpp-projects/cpp-fnonce-implementation/) 的文章，由站点同步脚本导出。
 # 手撕 C++ FnOnce
 ## 《C++那些事》手撕C++版本的Fn、FnOnce、FnMut
 ## 1.目标